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Frey, U.H.* ; Muehlschlegel, J.D.* ; Ochterbeck, C.* ; Fox, A.A.* ; Shernan, S.K.* ; Collard, C.D.* ; Lichtner, P. ; Peters, J.* ; Body, S.*

GNAS gene variants affect β-blocker-related survival after coronary artery bypass grafting.

Anesthesiology 120, 1109-1117 (2014)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
BACKGROUND: Cardiac overexpression of the β-adrenoreceptor (βAR)-coupled stimulatory G-protein subunit Gαs enhances inotropic responses to adrenergic stimulation and improves survival in mice under βAR blockade. The authors recently identified three common haplotypes in the GNAS gene encoding Gαs, with the greatest Gαs protein expression and signal transduction in haplotype *3 carriers and less in haplotype *2 and *1 carriers. The authors tested the hypothesis that these GNAS variants result in altered mortality in patients after coronary artery bypass graft surgery, particularly in those receiving βAR blockade. METHODS: This prospective analysis included 1,627 European ancestry patients undergoing primary coronary artery bypass graft surgery. Patients were genotyped for two GNAS haplotype tagging single-nucleotide polymorphisms defining three major haplotypes. Up to 5-yr all-cause mortality was estimated using a Cox proportional hazard model; hazard ratios and 95% CIs were calculated while adjusting for demographics, clinical covariates, and the new EuroSCORE II. RESULTS: Univariate analysis revealed haplotype-dependent 5-yr mortality rates (*1/*1: 18.9%, *2/*1: 13.7%, *2/*2: 9.3%, *3/*1: 10.6%, *3/*2: 9.1%, and *3/*3: 9.6%; P = 0.0006). After adjustment for other predictors of death, homozygote haplotype *1 carriers showed a doubled risk for death (hazard ratio, 2.2; 95% CI, 1.2 to 3.8; P = 0.006). Considering only patients receiving βAR blockers (n = 1,267), the adjusted risk of death even tripled (hazard ratio, 3.0; 95% CI, 1.5 to 6.1; P = 0.002). CONCLUSIONS: GNAS haplotypes independently associate with an increased risk of death after primary coronary artery bypass graft surgery. These results are most pronounced in patients receiving βAR blockers, strengthening the rationale for personalized treatment, to decrease medication side effects and improve outcomes.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter G-alpha-s; Heart-failure; Myocardial-infarction; Ventricular Dysfunction; Independent Predictor; Cardiac-function; Controlled-trial; Euroscore Ii; G-proteins; Surgery
ISSN (print) / ISBN 0003-3022
e-ISSN 1528-1175
Zeitschrift Anesthesiology
Quellenangaben Band: 120, Heft: 5, Seiten: 1109-1117 Artikelnummer: , Supplement: ,
Verlag Lippincott Williams & Wilkins
Verlagsort Philadelphia
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Human Genetics (IHG)